There is a lot in that message.
The fact that Chris has had dreams about fucking Barb seems like 4/10 fucked up at best. People have fucked up dreams.
Sharing it on facebook is more fucked up. But to make it worse, he puts it in a long post which, given its relative coherence, he obviously put some thought and effort into. That's weird on two fronts. Firstly, as people have said, it's a ridiculous and unnecessary overshare. Secondly, what an odd choice for him to comment on. Every now and then he posts a long and "thoughtful" comment on some LGBT issue or some movie or tv show he had an opinion about. Those posts are somewhat dumb, because it is Chris, but at least those are topics we know he is interested in. It makes sense for him to read about an LGBT issue, mull it over for a while, and then post his thoughts. Why did he choose to do it?
It becomes even more fucked up when you think about how seriously Chris takes his dreams. He has seen previous dreams as promises from God. That is super bizarre in this context.
But the weirdest part of it is the comment "people should fuck their moms so they have practice for other people". That comment is like an onion. Every layer is weirder and weirder.